Description:Squares of Doom:Addition: Solve each of the 10 levels by filling in the orange squares to sum up to the red squares, both rows and columns. Careful though: boxes can have a pair that must contain the same number. Give the game your best shot! Orange - Open, Red - Total. Hover over a box. Type a number. Box A = Box A, Box B = Box B, and so on. Highest possible number is the current level. use mouse for movement